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http://dx.doi.org/10.3744/SNAK.2004.41.6.015

Development of Stand-alone Performance Test System for an Intake-diffuser of the Waterjet Propulsion  

Ahn Jong-Woo (Korea Research Institute of Ships & Ocean Engineering / KORDI)
Kim Ki-Sup (Korea Research Institute of Ships & Ocean Engineering / KORDI)
Park Young-Ha (Korea Research Institute of Ships & Ocean Engineering / KORDI)
Kim Kyung-Youl (Korea Research Institute of Ships & Ocean Engineering / KORDI)
Publication Information
Journal of the Society of Naval Architects of Korea / v.41, no.6, 2004 , pp. 15-23 More about this Journal
Abstract
In order to investigate efficiency and flowfield charateristics of the intake-diffuser for the ship waterjet propulsion, new experimental verification technology was set up in the cavitation tunnel. 1-hole and 5-hole pilot tubes were designed and manufactured to measure the pressure and velocity distributions at intake-diffuser entrance and impeller inlet. The calibration of the 5-hole pilot tubes is conducted at the cavitation tunnel The cavitation inception occurs at the intake lip, and the occurrence position depends on IVR (Inlet Velocity Ratio) condition. The present experimental device will be applied sufficiently for the development of the design and performance improvement technologies.
Keywords
Waterjet propulsion; Intake-diffuser; IVR; Intake-diffuser efficiency; cavitation;
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